AMD Radeon HD 7970M vs NVIDIA GeForce GT 645 OEM
Comparative analysis of AMD Radeon HD 7970M and NVIDIA GeForce GT 645 OEM videocards for all known characteristics in the following categories: Essentials, Technical info, Video outputs and ports, Compatibility, dimensions and requirements, API support, Memory. Benchmark videocards performance analysis: PassMark - G3D Mark, PassMark - G2D Mark, Geekbench - OpenCL, CompuBench 1.5 Desktop - Face Detection (mPixels/s), CompuBench 1.5 Desktop - Ocean Surface Simulation (Frames/s), CompuBench 1.5 Desktop - T-Rex (Frames/s), CompuBench 1.5 Desktop - Video Composition (Frames/s), CompuBench 1.5 Desktop - Bitcoin Mining (mHash/s), GFXBench 4.0 - Car Chase Offscreen (Frames), GFXBench 4.0 - Manhattan (Frames), GFXBench 4.0 - T-Rex (Frames), GFXBench 4.0 - Car Chase Offscreen (Fps), GFXBench 4.0 - Manhattan (Fps), GFXBench 4.0 - T-Rex (Fps), 3DMark Fire Strike - Graphics Score.
Differences
Reasons to consider the AMD Radeon HD 7970M
- Around 10% higher core clock speed: 850 MHz vs 776 MHz
- Around 83% higher texture fill rate: 68 GTexel / s vs 37.2 GTexel / s
- 4.4x more pipelines: 1280 vs 288
- 2.4x better floating-point performance: 2,176 gflops vs 894.0 gflops
- A newer manufacturing process allows for a more powerful, yet cooler running videocard: 28 nm vs 40 nm
- Around 2% lower typical power consumption: 100 Watt vs 102 Watt
- 2x more maximum memory size: 2 GB vs 1 GB
- Around 25% higher memory clock speed: 4800 MHz vs 3828 MHz
- Around 76% better performance in PassMark - G3D Mark: 3529 vs 2006
- Around 14% better performance in PassMark - G2D Mark: 506 vs 443
- Around 74% better performance in GFXBench 4.0 - T-Rex (Frames): 3339 vs 1914
- Around 74% better performance in GFXBench 4.0 - T-Rex (Fps): 3339 vs 1914
| Specifications (specs) | |
| Core clock speed | 850 MHz vs 776 MHz |
| Texture fill rate | 68 GTexel / s vs 37.2 GTexel / s |
| Pipelines | 1280 vs 288 |
| Floating-point performance | 2,176 gflops vs 894.0 gflops |
| Manufacturing process technology | 28 nm vs 40 nm |
| Thermal Design Power (TDP) | 100 Watt vs 102 Watt |
| Maximum memory size | 2 GB vs 1 GB |
| Memory clock speed | 4800 MHz vs 3828 MHz |
| Benchmarks | |
| PassMark - G3D Mark | 3529 vs 2006 |
| PassMark - G2D Mark | 506 vs 443 |
| GFXBench 4.0 - T-Rex (Frames) | 3339 vs 1914 |
| GFXBench 4.0 - T-Rex (Fps) | 3339 vs 1914 |
Compare benchmarks
GPU 1: AMD Radeon HD 7970M
GPU 2: NVIDIA GeForce GT 645 OEM
| PassMark - G3D Mark |
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| PassMark - G2D Mark |
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| GFXBench 4.0 - T-Rex (Frames) |
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| GFXBench 4.0 - T-Rex (Fps) |
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| Name | AMD Radeon HD 7970M | NVIDIA GeForce GT 645 OEM |
|---|---|---|
| PassMark - G3D Mark | 3529 | 2006 |
| PassMark - G2D Mark | 506 | 443 |
| Geekbench - OpenCL | 22410 | |
| CompuBench 1.5 Desktop - Face Detection (mPixels/s) | 51.181 | |
| CompuBench 1.5 Desktop - Ocean Surface Simulation (Frames/s) | 1121.002 | |
| CompuBench 1.5 Desktop - T-Rex (Frames/s) | 5.355 | |
| CompuBench 1.5 Desktop - Video Composition (Frames/s) | 81.527 | |
| CompuBench 1.5 Desktop - Bitcoin Mining (mHash/s) | 256.99 | |
| GFXBench 4.0 - Car Chase Offscreen (Frames) | 5094 | |
| GFXBench 4.0 - Manhattan (Frames) | 3692 | |
| GFXBench 4.0 - T-Rex (Frames) | 3339 | 1914 |
| GFXBench 4.0 - Car Chase Offscreen (Fps) | 5094 | |
| GFXBench 4.0 - Manhattan (Fps) | 3692 | |
| GFXBench 4.0 - T-Rex (Fps) | 3339 | 1914 |
| 3DMark Fire Strike - Graphics Score | 0 |
Compare specifications (specs)
| AMD Radeon HD 7970M | NVIDIA GeForce GT 645 OEM | |
|---|---|---|
Essentials |
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| Architecture | GCN 1.0 | Fermi 2.0 |
| Code name | Wimbledon | GF114 |
| Launch date | 24 April 2012 | 24 April 2012 |
| Place in performance rating | 590 | 557 |
| Type | Laptop | Desktop |
Technical info |
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| Core clock speed | 850 MHz | 776 MHz |
| Floating-point performance | 2,176 gflops | 894.0 gflops |
| Manufacturing process technology | 28 nm | 40 nm |
| Pipelines | 1280 | 288 |
| Texture fill rate | 68 GTexel / s | 37.2 GTexel / s |
| Thermal Design Power (TDP) | 100 Watt | 102 Watt |
| Transistor count | 2,800 million | 1,950 million |
Video outputs and ports |
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| Display Connectors | No outputs | 2x DVI, 1x mini-HDMI |
Compatibility, dimensions and requirements |
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| Interface | MXM-B (3.0) | PCIe 2.0 x16 |
| Laptop size | large | |
| Supplementary power connectors | None | |
| Length | 210 mm | |
API support |
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| DirectX | 12.0 (11_1) | 12.0 (11_0) |
| OpenGL | 4.5 | 4.6 |
Memory |
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| Maximum RAM amount | 2 GB | 1 GB |
| Memory bandwidth | 153.6 GB / s | 91.9 GB / s |
| Memory bus width | 256 Bit | 192 Bit |
| Memory clock speed | 4800 MHz | 3828 MHz |
| Memory type | GDDR5 | GDDR5 |
| Shared memory | 0 | |
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